Bluetooth speaker system



FIG. 1 is a front perspective view of a bluetooth speaker system showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a side view thereof, the opposite side view being a mirror image; and,

FIG. 7 is a cross-sectional view along line 7-7 in FIG. 2.

The broken lines in the drawings illustrate environmental material that forms no part of the claimed design. 

The ornamental design for a bluetooth speaker system, as shown and described. 